[RFC,v2,0/6] ufs: set power domain performance state when scaling gears

Message

Krzysztof Kozlowski April 11, 2022, 3:43 p.m. UTC

Hi,

This is a proof-of-concept/RFC for changing the performance state
of power rails when scaling gears.

Changes since v1
================
1. Patch #1 qcom,gcc-sdm845: fix typo (Stephen).
2. Patch #2 ufs dt-bindings: not adding Rob's review because patch
   changed significantly.
3. PM: add new code for handling multiple clocks.
4. UFS: deprecate freq-table-hz property and use PM opps instead.

Dependencies
============
The UFS patch depends on PM opp adding multiple clock support.

Best regards,
Krzysztof

Krzysztof Kozlowski (6):
  dt-bindings: clock: qcom,gcc-sdm845: add parent power domain
  dt-bindings: opp: accept array of frequencies
  dt-bindings: ufs: common: add OPP table
  PM: opp: allow control of multiple clocks
  ufs: use PM OPP when scaling gears
  arm64: dts: qcom: sdm845: control RPMHPD performance states with UFS

 .../bindings/clock/qcom,gcc-sdm845.yaml       |   3 +
 .../devicetree/bindings/opp/opp-v2-base.yaml  |   8 +
 .../devicetree/bindings/ufs/ufs-common.yaml   |  34 ++-
 arch/arm64/boot/dts/qcom/sdm845.dtsi          |  43 +++-
 drivers/opp/core.c                            | 205 ++++++++++++++----
 drivers/opp/of.c                              |  48 ++++
 drivers/opp/opp.h                             |   9 +-
 drivers/scsi/ufs/ufshcd-pltfrm.c              |  69 ++++++
 drivers/scsi/ufs/ufshcd.c                     | 115 +++++++---
 drivers/scsi/ufs/ufshcd.h                     |   4 +
 include/linux/pm_opp.h                        |  23 ++
 11 files changed, 475 insertions(+), 86 deletions(-)